CN111007152A - Acoustic performance comprehensive evaluation method and system - Google Patents

Acoustic performance comprehensive evaluation method and system Download PDF

Info

Publication number
CN111007152A
CN111007152A CN201911344888.XA CN201911344888A CN111007152A CN 111007152 A CN111007152 A CN 111007152A CN 201911344888 A CN201911344888 A CN 201911344888A CN 111007152 A CN111007152 A CN 111007152A
Authority
CN
China
Prior art keywords
acoustic
part material
comprehensive
sound absorption
absorption coefficient
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201911344888.XA
Other languages
Chinese (zh)
Other versions
CN111007152B (en
Inventor
田秀杰
江育莹
黄威
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuxi Jixing Auto Acoustic Parts Technology Co Ltd
Original Assignee
Wuxi Jixing Auto Acoustic Parts Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuxi Jixing Auto Acoustic Parts Technology Co Ltd filed Critical Wuxi Jixing Auto Acoustic Parts Technology Co Ltd
Priority to CN201911344888.XA priority Critical patent/CN111007152B/en
Publication of CN111007152A publication Critical patent/CN111007152A/en
Application granted granted Critical
Publication of CN111007152B publication Critical patent/CN111007152B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04—Analysing solids
    • G01N29/11—Analysing solids by measuring attenuation of acoustic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

The invention discloses a comprehensive evaluation method and a comprehensive evaluation system for acoustic performance, wherein the method comprises the following steps: acquiring the insertion loss of the acoustic part material; acquiring the sound absorption coefficient of an acoustic part material; and calculating the comprehensive evaluation value of the acoustic performance of the acoustic part material according to the insertion loss of the acoustic part material and the sound absorption coefficient of the acoustic part material. The invention can simply and quickly compare the acoustic performance of the acoustic part material, greatly improves the engineering application efficiency and is suitable for popularization and application.

Description

Acoustic performance comprehensive evaluation method and system
Technical Field
The invention relates to the field of comprehensive evaluation of scheme performance of automobile acoustic parts, in particular to a comprehensive evaluation method and a comprehensive evaluation system for acoustic performance.
Background
The automobile noise is one of important indexes for measuring the quality level of the automobile, the comfort level of passengers can be improved by effectively controlling the noise in the automobile, and the competitiveness of the automobile brand is improved. The design of the acoustic package of the whole vehicle is the key in the noise vibration design, and the noise reduction can be carried out on the basis of not changing the structure of the whole vehicle by improving the acoustic package. Different acoustic package schemes may result in different in-vehicle noise. The sound pressure level in the vehicle is one of the parameters for measuring the acoustic level of the whole vehicle, and engineers need to obtain the sound pressure level in the vehicle through whole vehicle testing or whole vehicle simulation, so as to compare the advantages and disadvantages of different acoustic package schemes. However, the whole vehicle test or the whole vehicle simulation usually consumes a large amount of manpower and material resources, so it is necessary to convert the acoustic requirements of the whole vehicle level to the part level. At present, the performance of acoustic part materials in engineering is divided into sound absorption performance and sound insulation performance, engineers can only independently compare the sound absorption performance or the sound insulation performance, and comprehensive judgment is difficult.
Disclosure of Invention
The present invention is directed to a method and system for comprehensive evaluation of acoustic performance to solve the problems mentioned in the background section above.
In order to achieve the purpose, the invention adopts the following technical scheme:
a comprehensive acoustic performance evaluation method comprises the following steps:
s101, obtaining the insertion loss of an acoustic part material;
s102, obtaining the sound absorption coefficient of an acoustic part material;
s103, calculating the comprehensive acoustic performance evaluation value of the acoustic part material according to the insertion loss of the acoustic part material and the sound absorption coefficient of the acoustic part material.
Specifically, the step S103 includes that if the insertion loss of the acoustic part material is IL and the sound absorption coefficient of the acoustic part material is α, the overall evaluation value SAIL of the acoustic part material is IL +10log (α), where the larger the value of SAIL, the better the acoustic performance of the acoustic part material.
Based on the comprehensive acoustic performance evaluation method, the invention also provides a comprehensive acoustic performance evaluation system, which comprises an insertion loss unit, a sound absorption coefficient unit and a comprehensive acoustic performance evaluation unit; the insertion loss unit is used for acquiring the insertion loss of the acoustic part material; the sound absorption coefficient unit is used for acquiring the sound absorption coefficient of an acoustic part material; the acoustic performance comprehensive evaluation unit is used for calculating the acoustic performance comprehensive evaluation value of the acoustic part material according to the insertion loss of the acoustic part material and the sound absorption coefficient of the acoustic part material.
Particularly, the comprehensive acoustic performance evaluation unit is specifically used for evaluating the comprehensive acoustic performance evaluation value SAIL +10log (α) of the acoustic part material if the insertion loss of the acoustic part material is IL and the sound absorption coefficient of the acoustic part material is α, wherein the larger the value of SAIL, the better the acoustic performance of the acoustic part material.
The comprehensive acoustic performance evaluation method and system provided by the invention solve the technical problems mentioned in the background technology part, can simply and quickly compare the acoustic performance of acoustic part materials, greatly improve the engineering application efficiency and are suitable for popularization and application.
Drawings
Fig. 1 is a schematic flow chart of a comprehensive acoustic performance evaluation method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a sound source, path, and receiving system provided by an embodiment of the present invention;
fig. 3 shows insertion loss IL for the acoustic packet scheme a and the scheme B provided by the embodiment of the present invention;
fig. 4 shows sound absorption coefficients α of the acoustic package solutions a and B provided by the embodiment of the present invention.
Fig. 5 shows the overall performance SAIL of the acoustic packet scheme a and the acoustic packet scheme B according to an embodiment of the present invention.
Detailed Description
The invention is further illustrated by the following figures and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It is also to be noted that, for the convenience of description, only a part of the contents, not all of the contents, which are related to the present invention, are shown in the drawings, and unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1, fig. 1 is a schematic flow chart of a comprehensive acoustic performance evaluation method according to an embodiment of the present invention.
The comprehensive acoustic performance evaluation method in the embodiment comprises the following steps:
s101, obtaining the insertion loss of the acoustic part material.
S102, obtaining the sound absorption coefficient of the acoustic part material.
S103, calculating the comprehensive acoustic performance evaluation value of the acoustic part material according to the insertion loss of the acoustic part material and the sound absorption coefficient of the acoustic part material.
Specifically, in this embodiment, if the insertion loss of the acoustic part material is IL and the sound absorption coefficient of the acoustic part material is α, the overall evaluation value SAIL of the acoustic part material is IL +10log (α), where the larger the value of SAIL, the better the acoustic performance of the acoustic part material.
To facilitate a better understanding of the present invention, the following brief description is given of the extrapolation process of formula SAIL +10log (α):
in the whole vehicle high-frequency noise analysis, the transmission of sound energy among subsystems of the whole vehicle and the sound pressure level of each subsystem are analyzed based on a statistical energy analysis method, so that the improvement of an acoustic package scheme is guided. As shown in fig. 2, the schematic diagram of the sound source, path and receiving system includes a sound source cavity on the left, a receiving cavity on the right and a path in the middle. Energy flows between the acoustic cavity subsystems, and the energy flowing per unit time is the power flow. According to fig. 2, the power flow balance equation can be listed:
Figure BDA0002333061450000041
wherein, η1Damping loss factor for the source cavity, η2Damping loss factor for the receiving cavity, η12Is the coupling loss factor of the source cavity to the receiving cavity, η21For coupling loss factor of receiving cavity to sound source cavity, E1Energy of the sound source chamber, E2For receiving the energy of the cavity, ω is the central circular frequency, P1Is the sound power excitation of the sound source chamber.
Assuming the receiving chamber absorbs energy at a higher rate than the energy transmitted to the source chamber, η2＞＞η21，η1＞＞η12Equation (1) can be simplified to:
Figure BDA0002333061450000042
from the definition of the damping loss factor and the coupling loss factor, it can be seen that:
Figure BDA0002333061450000043
Figure BDA0002333061450000044
Figure BDA0002333061450000045
wherein A is1Surface area of the source chamber, α1Is the sound absorption coefficient of the sound source cavity, V1Is the volume of the source chamber, c is the speed of sound, A2To receive the surface area of the cavity, α2For sound absorption coefficient of the receiving chamber, V2To receive the volume of the cavity, A12Is the effective area of the sound transmission path, tau12Is the transmission coefficient.
From the reference (Hiroko Tada. achievement of Performance Design Process for Vehicle Sound Based on SEA Method [ C ]. SAE Technical Paper2015-01-0664.2015.), the in-Vehicle energy transfer loss ETL is:
Figure BDA0002333061450000046
substituting equations (2), (3), (4) and (5) into equation (6) can yield:
Figure BDA0002333061450000051
as can be seen, ETL is related to acoustic transmission loss STL, the amount of sound absorption of the source and receiving chambers, the volume of the receiving chamber, the effective transmission path area.
If the acoustic package processing of the receiving cavity is changed and the sound source cavity is kept unchanged, receivingBefore and after the acoustic material scheme is changed, the energy transmission loss of the structural system is ETL and ETL ' respectively, the sound transmission loss is STL and STL ' respectively, the insertion loss of the material is IL and IL ' respectively, and the sound absorption coefficient of the material in the receiving cavity is α respectively2、α2'. The energy transfer loss difference DETL is defined as:
Figure BDA0002333061450000052
it can be seen that DETL is only related to insertion loss and sound absorption coefficient before and after a change in material structure. The greater the energy loss from the source chamber to the receiving chamber, the better the noise control process, i.e. the better the overall acoustic performance of the acoustic package in the transmission path.
To sum up, the present embodiment provides the above comprehensive evaluation method for acoustic performance, and its formula is:
SAIL＝IL+10log(α) (9)
where IL represents the insertion loss of the material and α represents the sound absorption coefficient of the material, a higher SAIL value indicates better performance of the acoustic material.
In particular, in engineering practice, the invention applies to comparing the comprehensive acoustic performance of acoustic package solutions. For example, in the conventional acoustic bag scheme a and the acoustic bag scheme B, the insertion loss of the material is shown in fig. 3, and the sound absorption coefficient of the material in the receiving cavity is shown in fig. 4. It can be found that the insertion loss of the acoustic package scheme a is higher than that of the acoustic package scheme B, and the sound absorption coefficient of the acoustic package scheme B is higher than that of the acoustic package scheme a, so that a better scheme cannot be determined from the insertion loss and the sound absorption coefficient alone.
According to the comprehensive acoustic performance evaluation method provided by the embodiment, the insertion loss and the sound absorption coefficient of the acoustic package schemes A and B are substituted into the comprehensive acoustic performance evaluation formula (9) to obtain SAIL shown in figure 5, and the scheme A is intuitively compared with the acoustic package scheme B from the result.
In addition, based on the comprehensive acoustic performance evaluation method provided by the above embodiment, the embodiment also provides a comprehensive acoustic performance evaluation system, which includes an insertion loss unit, a sound absorption coefficient unit and a comprehensive acoustic performance evaluation unit; the insertion loss unit is used for acquiring the insertion loss of the acoustic part material; the sound absorption coefficient unit is used for acquiring the sound absorption coefficient of an acoustic part material; the acoustic performance comprehensive evaluation unit is used for calculating the acoustic performance comprehensive evaluation value of the acoustic part material according to the insertion loss of the acoustic part material and the sound absorption coefficient of the acoustic part material.
Specifically, in this embodiment, the comprehensive acoustic performance evaluation unit is specifically configured to, if the insertion loss of the acoustic part material is IL and the sound absorption coefficient of the acoustic part material is α, obtain the comprehensive acoustic performance evaluation value SAIL of the acoustic part material, which is IL +10log (α), where the larger the value of SAIL, the better the acoustic performance of the acoustic part material.
The technical scheme provided by the invention solves the technical problems mentioned in the background technology part, can simply and quickly compare the acoustic performance of the acoustic part material, greatly improves the engineering application efficiency, and is suitable for popularization and application.
It will be understood by those skilled in the art that all or part of the above embodiments may be implemented by the computer program to instruct the relevant hardware, and the program may be stored in a computer readable storage medium, and when executed, may include the procedures of the embodiments of the methods as described above. The storage medium may be a magnetic disk, an optical disk, a read-only memory or a random access memory.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (4)

1. A comprehensive acoustic performance evaluation method is characterized by comprising the following steps:
s101, obtaining the insertion loss of an acoustic part material;
s102, obtaining the sound absorption coefficient of an acoustic part material;
s103, calculating the comprehensive acoustic performance evaluation value of the acoustic part material according to the insertion loss of the acoustic part material and the sound absorption coefficient of the acoustic part material.
2. The comprehensive acoustic performance evaluation method of claim 1, wherein the step S103 specifically comprises evaluating the comprehensive acoustic performance evaluation value SAIL +10log (α) of the acoustic part material if the insertion loss of the acoustic part material is IL and the sound absorption coefficient of the acoustic part material is α, wherein the larger the value of SAIL, the better the acoustic performance of the acoustic part material.
3. An acoustic performance comprehensive evaluation system based on the acoustic performance comprehensive evaluation method of claim 1, characterized in that the system comprises an insertion loss unit, a sound absorption coefficient unit and an acoustic performance comprehensive evaluation unit; the insertion loss unit is used for acquiring the insertion loss of the acoustic part material; the sound absorption coefficient unit is used for acquiring the sound absorption coefficient of an acoustic part material; the acoustic performance comprehensive evaluation unit is used for calculating the acoustic performance comprehensive evaluation value of the acoustic part material according to the insertion loss of the acoustic part material and the sound absorption coefficient of the acoustic part material.
4. The system of claim 3, wherein the comprehensive acoustic performance evaluation unit is specifically configured to evaluate the comprehensive acoustic performance evaluation value SAIL +10log (α) of the acoustic part material if the insertion loss of the acoustic part material is IL and the sound absorption coefficient of the acoustic part material is α, wherein the larger the value of SAIL, the better the acoustic performance of the acoustic part material.
CN201911344888.XA 2019-12-24 2019-12-24 Acoustic performance comprehensive evaluation method and system Active CN111007152B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911344888.XA CN111007152B (en) 2019-12-24 2019-12-24 Acoustic performance comprehensive evaluation method and system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911344888.XA CN111007152B (en) 2019-12-24 2019-12-24 Acoustic performance comprehensive evaluation method and system

Publications (2)

Publication Number Publication Date
CN111007152A true CN111007152A (en) 2020-04-14
CN111007152B CN111007152B (en) 2022-08-16

Family

ID=70116105

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911344888.XA Active CN111007152B (en) 2019-12-24 2019-12-24 Acoustic performance comprehensive evaluation method and system

Country Status (1)

Country Link
CN (1) CN111007152B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113821969A (en) * 2021-07-02 2021-12-21 中汽研（天津）汽车工程研究院有限公司 Concept model-based target decomposition method for sound absorption and insulation performance of automobile acoustic package
CN114166949A (en) * 2021-10-27 2022-03-11 东风汽车集团股份有限公司 In-vehicle acoustic absorption test method, device and equipment

Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1558641A (en) * 1976-03-31 1980-01-09 Telediffusion Fse Acoustic measuring system
JPS6184526A (en) * 1984-10-02 1986-04-30 Hokkaido Measuring device for acoustic transmission loss of material
BG51836A1 (en) * 1988-07-11 1993-09-15 Bg Tekhn Uni Device for measuring the coefficient of sound absorption from materials
JP2003302388A (en) * 2002-04-11 2003-10-24 Mitsubishi Electric Corp Ultrasonic probe
JP2012052987A (en) * 2010-09-03 2012-03-15 Takenaka Komuten Co Ltd Sound adsorption coefficient measuring device, sound characteristics measuring device, method and program
CN103698403A (en) * 2013-12-16 2014-04-02 同济大学 Measuring method and measuring device for sound insulation quantities of material and members
CN104535647A (en) * 2014-11-26 2015-04-22 华晨汽车集团控股有限公司 Prediction apparatus for sound absorption and insulation performance of multilayer material and method
CN105300706A (en) * 2015-10-22 2016-02-03 华晨汽车集团控股有限公司 NVH performance test method for automobile acoustic package
CN105301114A (en) * 2015-10-20 2016-02-03 浙江大学 Acoustic coating layer insertion loss measurement method based on multi-channel space-time inverse filtering technology
CN105373649A (en) * 2015-10-13 2016-03-02 同济汽车设计研究院有限公司 Method for optimizing sound package based on composite wall sound insulation theory
JP2017003276A (en) * 2015-06-04 2017-01-05 鹿島建設株式会社 Acoustic performance estimation method, acoustic performance estimation device, and acoustic performance estimation program
CN107907595A (en) * 2017-12-28 2018-04-13 吉林大学 Sound wave oblique incidence material acoustic absorptivity and sound insulation measuring device and its measuring method
CN109307711A (en) * 2018-11-28 2019-02-05 中车长春轨道客车股份有限公司 Train run-through channel sound insulation property test method based on reverberation chamber and anechoic room
CN109783969A (en) * 2019-01-26 2019-05-21 北京工商大学 A method of different-thickness homogeneous material acoustic characteristic is calculated using transfer matrix
CN109900788A (en) * 2019-03-18 2019-06-18 阜阳师范学院 A kind of device and measurement method can be used for carrying out the sound absorption characteristics of acoustical material in-site measurement
CN110231408A (en) * 2019-06-04 2019-09-13 杨军 A kind of method and device measuring material acoustics constant
CN110470486A (en) * 2019-08-26 2019-11-19 重庆长安汽车股份有限公司 The sound insulation property prediction technique and prediction meanss of plates of automobile component assembly with blocking piece

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1558641A (en) * 1976-03-31 1980-01-09 Telediffusion Fse Acoustic measuring system
JPS6184526A (en) * 1984-10-02 1986-04-30 Hokkaido Measuring device for acoustic transmission loss of material
BG51836A1 (en) * 1988-07-11 1993-09-15 Bg Tekhn Uni Device for measuring the coefficient of sound absorption from materials
JP2003302388A (en) * 2002-04-11 2003-10-24 Mitsubishi Electric Corp Ultrasonic probe
JP2012052987A (en) * 2010-09-03 2012-03-15 Takenaka Komuten Co Ltd Sound adsorption coefficient measuring device, sound characteristics measuring device, method and program
CN103698403A (en) * 2013-12-16 2014-04-02 同济大学 Measuring method and measuring device for sound insulation quantities of material and members
CN104535647A (en) * 2014-11-26 2015-04-22 华晨汽车集团控股有限公司 Prediction apparatus for sound absorption and insulation performance of multilayer material and method
JP2017003276A (en) * 2015-06-04 2017-01-05 鹿島建設株式会社 Acoustic performance estimation method, acoustic performance estimation device, and acoustic performance estimation program
CN105373649A (en) * 2015-10-13 2016-03-02 同济汽车设计研究院有限公司 Method for optimizing sound package based on composite wall sound insulation theory
CN105301114A (en) * 2015-10-20 2016-02-03 浙江大学 Acoustic coating layer insertion loss measurement method based on multi-channel space-time inverse filtering technology
CN105300706A (en) * 2015-10-22 2016-02-03 华晨汽车集团控股有限公司 NVH performance test method for automobile acoustic package
CN107907595A (en) * 2017-12-28 2018-04-13 吉林大学 Sound wave oblique incidence material acoustic absorptivity and sound insulation measuring device and its measuring method
CN109307711A (en) * 2018-11-28 2019-02-05 中车长春轨道客车股份有限公司 Train run-through channel sound insulation property test method based on reverberation chamber and anechoic room
CN109783969A (en) * 2019-01-26 2019-05-21 北京工商大学 A method of different-thickness homogeneous material acoustic characteristic is calculated using transfer matrix
CN109900788A (en) * 2019-03-18 2019-06-18 阜阳师范学院 A kind of device and measurement method can be used for carrying out the sound absorption characteristics of acoustical material in-site measurement
CN110231408A (en) * 2019-06-04 2019-09-13 杨军 A kind of method and device measuring material acoustics constant
CN110470486A (en) * 2019-08-26 2019-11-19 重庆长安汽车股份有限公司 The sound insulation property prediction technique and prediction meanss of plates of automobile component assembly with blocking piece

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
HIROKO TADA等: "Establishment of Performance Design Process for Vehicle Sound-Proof Packages Based on SEA Method", 《SAE》 *
庞剑等: "《汽车噪声与振动-理论与应用》", 30 June 2006 *
祁孝先等: "《煤矿噪声与控制》", 31 January 1989 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113821969A (en) * 2021-07-02 2021-12-21 中汽研（天津）汽车工程研究院有限公司 Concept model-based target decomposition method for sound absorption and insulation performance of automobile acoustic package
CN113821969B (en) * 2021-07-02 2024-02-13 中汽研（天津）汽车工程研究院有限公司 Target decomposition method for sound absorption and insulation performance of automobile acoustic package based on conceptual model
CN114166949A (en) * 2021-10-27 2022-03-11 东风汽车集团股份有限公司 In-vehicle acoustic absorption test method, device and equipment
CN114166949B (en) * 2021-10-27 2024-04-02 东风汽车集团股份有限公司 In-vehicle sound absorption testing method, device and equipment

Also Published As

Publication number Publication date
CN111007152B (en) 2022-08-16

Similar Documents

Publication Publication Date Title
CN111007152B (en) Acoustic performance comprehensive evaluation method and system
CN109753722A (en) A kind of optimum design method and system improving noise transfer function
CN107862141A (en) A kind of rail vehicle low noise forward design method
CN113821969A (en) Concept model-based target decomposition method for sound absorption and insulation performance of automobile acoustic package
CN111024407A (en) Analysis method for automobile sound insulation weak position based on sound transmission test
CN110309548B (en) Water-based damping material optimization method taking equivalent radiated sound power as optimization target
CN113886974B (en) Method for predicting sound path noise of in-vehicle structure
CN106482919A (en) Vehicle bang path acquisition methods and device
CN110398338B (en) Method and system for obtaining wind noise voice definition contribution in wind tunnel test
CN113158331B (en) In-vehicle noise optimization method based on genetic algorithm
CN101777345A (en) Design method of porous sound absorption structure material for sound absorption
CN110908287B (en) Method for making active feed-forward control strategy for vibration sound radiation of aluminum profile of railway vehicle body
CN113139242B (en) Online evaluation method and device for performance of pressure change valve of motor train unit
Tsuji et al. A study of experimental acoustic modal analysis of automotive interior acoustic field coupled with the body structure
CN105464755A (en) Automobile muffler
Peng et al. Experiment and simulation research on sound insulation performance of magnesium alloy dash panel
CN105764009B (en) Bass compensation automatic switching method and device
Prasanth et al. Using the Hybrid FE-SEA model of a trimmed full vehicle to reduce structure borne noise from 200Hz to 1kHz
Su et al. A review of commercial vehicle cab NVH research
CN111753368A (en) Method for predicting sound absorption performance in vehicle
Yang et al. A case study of interior booming noise control in an HEV
Dong et al. Highly Efficient Robust Optimization Design Method for Improving Automotive Acoustic Package Performance
Gong et al. Diagnosis of Road-Induced Drumming Noise of Passenger Car Based on Multiple Coherence Method
Meriç et al. Noise contribution analysis of a vehicle passenger compartment
CN118072759A (en) Noise separation method and device, electronic equipment and vehicle

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant